1998 Volkswagen Jetta Starting

I bougha car in Jacksonville, FL. Drove it back to Maryland in two days. No problems. Then I sprayed "Gunk" on some of the engine to clean it up, hosed it off and drove it to make sure that all the water had been burnt off. As I was down shifting, coming off of a freeway it dies. I tried to push start it to no avail. It also was low on fuel and I added a bottle of fuel cleaner 1st and then filled up the gas tank, trying to get the hesitation and jerking while I was pressing the accelarator. I'm letting it sit over night on the side of the road about 2 miles from my house and will try to star it tomorrow. It turns over but it seem like there is no "firing".